<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>

        段落，换行，标题的学习
    </title>
    <style>
        p{
            color: red;
        }
        h2{
            color:green;
        }
    </style>
</head>

<body>
    <p align="center">你是<br>一个傻子</p>
    <p align="left">你是一个傻瓜</p>
    <p align="right">你好,大傻子</p>
    <p>默认位置:left</p>
    <h1 align="center">一级标题</h1>
    <h2>二级标题</h2>

    <h3 align="right">三级标题</h3>
    <h1>haha</h1>
    <h2>hehe</h2>
    <h3>xixxi</h3>
    <h4>niui</h4>
    <h5>laoliuy</h5>
    <h6>wowu</h6>

</body>

</html>